TUCSON, Ariz. (AP) — Pac-12 scoring leader Aari McDonald scored 21 points on 9-of-14 shooting and No. 12 Arizona beat Washington State 72-57. McDonald, a junior who came in averaging 20.5 points per game, has scored in double figures in 62 consecutive games, the longest active streak in the nation. The Wildcats reached 10 conference wins for the first time since the 2010-11 season. Borislava Hristova scored 18 points for Washington State.